HIGH-pH Coagulation-Adsorption: A New Technology for Water Treatment and Reuse

1989 ◽  
Vol 21 (6-7) ◽  
pp. 511-517 ◽  
Author(s):  
A. M. Dziubek ◽  
A. L. Kowal
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Water Treatment ◽  
Treatment Process ◽  
New Technology ◽  
Treatment Technology ◽  
High Ph ◽  
Optimum Ph ◽  
Turbidity Level ◽  
Partial Inactivation

A novel high-pH water treatment technology with processed dolomite as coagulant is proposed. The technology has been developed on the basis of laboratory-scale experiments with model solutions and a variety of natural water samples. Treatment effects are assessed in terms of colour, turbidity, TOC and COD removal. The technology is successful when applied to the treatment of surface water, irrespective of the influent concentration of pollutants. The effluent is clear and colourless, displaying a high removal of organic matter and heavy metals, as well as a partial inactivation of viruses and bacteria. Following a single-stage recarbonation process, water treated via this technology exerts no corrosive action. The optimum dolomite coagulant dose depends exclusively on the influent alkalinity, provided that turbidity level and colour concentration are moderately high. The optimum pH for the treatment process approaches 10.5. The technology proposed is an advantageous combination of three unit processes: decarbonation, coagulation and adsorption.

The effect of nitrate and organic matter upon mobility of selenium in groundwater and in a water treatment process

1990 ◽  
Vol 49 (3-4) ◽  
pp. 251-272 ◽  
Author(s):  
Oleh Weres ◽  
Harry R. Bowman ◽  
Aaron Goldstein ◽  
Emily C. Smith ◽  
Leon Tsao ◽  
...  
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Treatment Process ◽  
Water Treatment Process

Environmental Control Technologies in Drilling and Production Operations Within Austrian Oilfields

2002 ◽  
Author(s):  
Reinhard Bacher ◽  
Gerhard Ruthammer
Keyword(s):  
Water Treatment ◽  
Oil And Gas ◽  
Environmental Control ◽  
New Technology ◽  
Electric Resistivity ◽  
Treatment Technology ◽  
Ecological Compensation ◽  
Exploration Process ◽  
Oil And Gas Exploration ◽  
Geophysical Surveys

It has to be the vision of an international oil and gas exploration and production company to explore for and produce oil and gas in the most economically efficient, social responsible and environmentally acceptable way. Based on this aim and due to the fact that Austria is a country with a environmental awareness and a high tourism level, OMV as the leading domestic oil and gas company had to elaborate strategies for the benefit of the company, its employees and shareholders, but also for the benefit of local communities maintaining the image of a healthy, clean and relaxing environment. The paper describes the different ways of implementing environmentally relevant technique and strategies beginning with exploration process and ending with the monitoring of oilfield wastes. Case histories demonstrate the concept of converting onshore drilling projects into action in environmentally sensitive regions using the idea of “ecological compensation”. Further a new technology of water treatment based on “microbiological clarification” is shown. With the new water treatment technology a valuable contribution to the protection of environment could be shared by OMV, because this method works without any application of biocides. Finally, innovative methods of calculating the risk potential of oilfield deposits using micro-geophysical surveys are illustrated. This measuring practice takes care of the electric resistivity contrast between oilfield deposits to its surrounding, so that any leakage can be observed immediately due to the change of electric resistivity profile. Generally the paper has the goal to illustrate acceptable ways to meet the environmental sensitivities of communities and authorities.

Natural Organic Matter (NOM) Transformations and their Effects on Water Treatment Process: A Contemporary Review

2021 ◽  
Vol 15 ◽  
Author(s):  
Manoj Kumar Karnena ◽  
Madhavi Konni ◽  
Bhavya Kavitha Dwarapureddi ◽  
Vara Saritha
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Natural Organic Matter ◽  
Membrane Filtration ◽  
Treatment Process ◽  
Climatic Conditions ◽  
Water And Wastewater Treatment ◽  
Water Treatment Process ◽  
Treatment Facilities ◽  
Water And Wastewater

Abstract: One of the several significant concerns related to water treatment plants is the transformation of natural organic matter (NOM) concerning quality and quantity due to the changing climatic conditions. The NOM consists of heterogeneous functionalized groups. Phenolic and carboxyl groups are the dominant groups that are pH-dependent and show a stronger affinity towards the metals. Properties of natural organic matter and trace elements govern the binding kinetics, influencing cations' binding to functionalized groups at lower pH. The water treatment process mechanisms like adsorption, coagulation, membrane filtration, and ion exchange efficiencies are sturdily influenced by the presence of NOM with cations and by the natural organic matter alone. The complexation among the natural organic matter and coagulants enhances the removal of NOM from the coagulation processes. The current review illustrates detailed interactions between natural organic matter and the potential impacts of cations on NOM in the water and wastewater treatment facilities.

Fractionation of organic matter and validation of groundwater water treatment technology

2017 ◽  
Vol 87 ◽  
pp. 101-108
Author(s):  
Ramunė Albrektienė ◽  
Mindaugas Rimeika ◽  
Birutė Tamulaitienė ◽  
Violeta Voisnienė ◽  
Ruta Grazeniene
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Treatment Technology ◽  
Water Treatment Technology

Emergency Treatment Measures for Sudden Pollution Incidents in Source Water with some Contaminants: A Review

2013 ◽  
Vol 781-784 ◽  
pp. 1950-1953 ◽  
Author(s):  
Hong Tao Wang ◽  
Xue Bin Jia ◽  
Dong Mei Liu ◽  
Zhi Wei Wang ◽  
Yun Hao Pan
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Water Purification ◽  
Seasonal Variability ◽  
Emergency Treatment ◽  
Treatment Process ◽  
Source Water ◽  
High Concentration ◽  
Water Treatment Process ◽  
Treatment Measures

Source water polluted by algae, ammonium and organic matter has been studied for many years. Sudden pollution incidents of source water have been reported across the whole country. Seasonal variability of rainfall across China has resulted in floods or droughts, thus incurred the high concentration of algae, ammonium and organic matter, causing severe challenges to the conventional water purification facilities. However, the conventional water treatment process is often unavailable to keep the safety of source water for drinking when sudden pollution occurs. Meanwhile, byproducts are often to be found over the whole treatment process, it is high time that researchers took effective measures to deal with this problem. In the present work, an overview of the recent research dealing with source water suddenly polluted by algae, ammonium and organic matter is presented.

Study on the Effect of Different Water Treatment Technology on Removing 2-MIB

2014 ◽  
Vol 587-589 ◽  
pp. 594-597
Author(s):  
Ping Xia ◽  
Dong Zhang ◽  
Zheng Wang ◽  
Hui Ye ◽  
Yu Qiong Shen ◽  
...  
Keyword(s):  
Water Treatment ◽  
Treatment Process ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Removal Rate ◽  
Pilot Test ◽  
Control Technology ◽  
Odor Control ◽  
Treatment Technology ◽  
Water Treatment Process

To compare the removal efficiency of 2-MIB by traditional water treatment, prechlorination, O3-BAC, MIEX pre adsorption and UV/H2O2 advanced oxidation process, the pilot-test of drinking water odor control technology were studied in this paper. The results showed that the traditional water treatment process had poor effect on removing 2-MIB, with about 10% removal rate, while the O3-BAC process was the best at removing 2-MIB, whose removal rate reached over 90%. And the 2-MIB removal rate of UV/H2O2 process was about 55% and that of prechlorination process was about 20%. However, the MIEX pretreatment process had almost no effect on removing 2-MIB.

The Research on Designing a New Artificial Ecological Sewage Treatment Technology

2012 ◽  
Vol 538-541 ◽  
pp. 3133-3136
Author(s):  
Su Tao Liang ◽  
Jin Xi Lu ◽  
Jiang Hai Ji ◽  
Liang Gao ◽  
Hong Wei Li ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Unit Volume ◽  
New Technology ◽  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Inorganic Element ◽  
Treatment Technology ◽  
Purification Efficiency ◽  
High Efficient

The research aims at a new technology of ecological waste water treatment, which can not only clean up in a high efficient to some inorganic element, such as N and P and etc, hold up pollutants in waste water efficiently, but also improve purification efficiency of unit volume of sewage by 32-46% and keep it functioning normally all year around.

Heavy Metals Bioremediation and Water Softening Using Ureolytic Metschnikowia Pulcherrima and Raoultella Planticola Strains

2021 ◽  
Author(s):  
Marwa Eltarahony ◽  
Ayman Kamal ◽  
sahar zaki ◽  
Desouky Abdelhaleem
Keyword(s):  
Heavy Metals ◽  
Water Treatment ◽  
Urease Activity ◽  
Treatment Process ◽  
Complete Removal ◽  
Water Softening ◽  
Carbonate Complex ◽  
Raoultella Planticola ◽  
Water Treatment Process ◽  
Metschnikowia Pulcherrima

Abstract This study employed the ureolytic fungal Metschnikowia pulcherrima (29A) and bacterial Raoultella planticola (VIP) strains in Pb 2+ and Hg 2+ removal using the promising CaCO 3 bio precipitation technique. Out of fifty isolates, strains 29A and VIP were selected based on their highest ureolytic activity followed by MIC assay using 350 ppm of Pb 2+ and Hg 2+ . The maximum urease activity recorded 884 and 639 U/mL for 29A and VIP strains at 24 and 30h of incubation, respectively. Complete removal of Pb 2+ was achieved at 42h and 90h for 29A, VIP correspondingly, while Hg 2+ was totally removed at 60h and 102h for 29A, VIP respectively. Remarkable removal of Ca 2+ (>95%) was achieved by the end of the experiments, which would address the hardness problem in the water treatment process. Further, EDX, SEM and, XRD were used to characterize the remediated precipitates. EDX profiles showed characteristic peaks of C, O and, Ca 2+ besides Pb 2+ and Hg 2+ . SEM illustrated the presence of microbial imprints and calcinated cells in the remediated bioliths. However, XRD confirmed the transformation of soluble metals to insoluble forms entrapped in calcite or vaterite lattice. Such a bioremediation approach ensures the detoxification and sequestration of heavy metals in a stable and durable matrix; obstructing their leach from carbonate complex trap to the environment.

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